calculate per-thread time offset

[vpp.git] / src / vlib / threads.h

diff --git a/src/vlib/threads.h b/src/vlib/threads.h
index 0e9cba5..95fcf3d 100644 (file)
--- a/src/vlib/threads.h
+++ b/src/vlib/threads.h
@@ -422,6 +422,21 @@ vlib_worker_thread_barrier_check (void)
        }
       while (*vlib_worker_threads->wait_at_barrier)
        ;
+
+      /*
+       * Recompute the offset from thread-0 time.
+       * Note that vlib_time_now adds vm->time_offset, so
+       * clear it first. Save the resulting idea of "now", to
+       * see how well we're doing. See show_clock_command_fn(...)
+       */
+      {
+       f64 now;
+       vm->time_offset = 0.0;
+       now = vlib_time_now (vm);
+       vm->time_offset = vlib_global_main.time_last_barrier_release - now;
+       vm->time_last_barrier_release = vlib_time_now (vm);
+      }
+
       if (CLIB_DEBUG > 0)
        vm->parked_at_barrier = 0;
       clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, -1);